| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788 |
- """
- ***************************************************************************
- TextToFloat.py
- ---------------------
- Date : May 2010
- Copyright : (C) 2010 by Michael Minn
- Email : pyqgis at michaelminn dot com
- ***************************************************************************
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- ***************************************************************************
- """
- __author__ = 'Michael Minn'
- __date__ = 'May 2010'
- __copyright__ = '(C) 2010, Michael Minn'
- from qgis.PyQt.QtCore import QVariant
- from qgis.core import (QgsField,
- QgsProcessing,
- QgsProcessingParameterField,
- QgsProcessingFeatureSource)
- from processing.algs.qgis.QgisAlgorithm import QgisFeatureBasedAlgorithm
- class TextToFloat(QgisFeatureBasedAlgorithm):
- FIELD = 'FIELD'
- def group(self):
- return self.tr('Vector table')
- def groupId(self):
- return 'vectortable'
- def __init__(self):
- super().__init__()
- self.field_name = None
- self.field_idx = -1
- def initParameters(self, config=None):
- self.addParameter(QgsProcessingParameterField(self.FIELD,
- self.tr('Text attribute to convert to float'),
- parentLayerParameterName='INPUT',
- type=QgsProcessingParameterField.String
- ))
- def name(self):
- return 'texttofloat'
- def displayName(self):
- return self.tr('Text to float')
- def outputName(self):
- return self.tr('Float from text')
- def inputLayerTypes(self):
- return [QgsProcessing.TypeVector]
- def outputFields(self, inputFields):
- self.field_idx = inputFields.lookupField(self.field_name)
- if self.field_idx >= 0:
- inputFields[self.field_idx] = QgsField(self.field_name, QVariant.Double, '', 24, 15)
- return inputFields
- def prepareAlgorithm(self, parameters, context, feedback):
- self.field_name = self.parameterAsString(parameters, self.FIELD, context)
- return True
- def supportInPlaceEdit(self, layer):
- return False
- def sourceFlags(self):
- return QgsProcessingFeatureSource.FlagSkipGeometryValidityChecks
- def processFeature(self, feature, context, feedback):
- value = feature[self.field_idx]
- try:
- if '%' in value:
- feature[self.field_idx] = float(value.replace('%', '')) / 100.0
- else:
- feature[self.field_idx] = float(value)
- except:
- feature[self.field_idx] = None
- return [feature]
|
